const kaikeba = {
    info:{name:'开课吧'},
    get name(){
        return this.info.name
    },
    set name(val){
        console.log('new name is '+ val)
        this.info.name = val
    }
}

console.log(kaikeba.name);
kaikeba.name = 'kaikeba'
console.log(kaikeba.name)